Trade certification · Welding
Welding Certification — Knowledge Practice
The theory behind welder certification: processes, electrodes, positions, defects and safety. Certification itself is usually a practical weld test.
Questions last checked against the official sources on October 6, 2026.
The real exam at a glance
- Certification
- Usually a practical weld test
- Common standard
- AWS D1.1 (structural steel)
- Knowledge
- Processes, symbols, safety
- Positions
- 1G–4G, 1F–4F, pipe 5G/6G
What you'll practise
Try a question
What does '1G' mean for pipe?
- Pipe vertical
- Pipe fixed horizontally
- Pipe at 45 degrees
- Pipe horizontal and rotated so welding is done in the flat position
Show the answer
D. Pipe horizontal and rotated so welding is done in the flat position — Rotating the pipe keeps the weld flat.
Sample questions by topic (in English)
- Processes
- Electrodes and filler metals
- Weld symbols
- Defects and discontinuities
- Testing and inspection
- Safety
- Joints and weld terms
- Metallurgy and procedures
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Questions about the Welding Knowledge
Is this the official Welding Knowledge?
No. Semplr is independent and not affiliated with the exam body. We write every question ourselves, in the official format and at the official level.
What is the real Welding Knowledge like?
Certification: Usually a practical weld test. Common standard: AWS D1.1 (structural steel). Knowledge: Processes, symbols, safety. Positions: 1G–4G, 1F–4F, pipe 5G/6G.
How is my practice marked?
Instantly. You see your score against the pass mark, and an explanation for every question — including the ones you got right.
Can I take it on my phone?
Yes. The whole mock exam works on a phone, and your progress is saved in your browser.
Ready for a full run?
One sitting, real timing, then your score against the pass mark.
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